1 official ruling from Bandai. Straight answers to how this card actually resolves.

If I digivolve my Level 5 Purple Digimon into [BT4-087]/[Anubismon] while under the effects of [EX1-071]/[Win Rate 60%], and trash this card from the hand. Can I use the <When Digivolving> effect of [BT4-087]/[Anubismon] before the "when this card is trashed from your hand" effect of SkullGreymon?
Yes, they both trigger at the same time. So you can choose which effect to activate first.
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